The Core Coverage Brush is designed with tightly packed synthetic fibres at its core with softer outer fibres for an even ultra smooth finish. The retractable foundation brush provides fast, detailed coverage for an unparalleled airbrushed finish on your skin.BENEFITS High performance buildable coverage. Dense core fibres allow for a quick application. Soft outer fibres provide an even finish. SWIRL the Core Coverage Brush in the compact. SWEEP onto the contours of the face. The Core Coverage Brush was designed specifically to be used with BAREPROâ„¢ Performance Wear Powder Foundation for thorough coverage and an exceptional airbrushed finish.